﻿<!DOCTYPE html>
<html>
<head>
   <title>6 - Filter cut-off Frequency</title>
   <meta name="generator" content="Help & Manual">
   <meta name="keywords" content="">
   <meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
   <link type="text/css" href="default.css" rel="stylesheet">
   <link type="text/css" href="custom.css" rel="stylesheet">
   <script type="text/javascript" src="nsh.js"></script>
   
<!-- non-scrolling headers for CHM and browser-based help, local styles-->
<style TYPE="text/css" media="screen"> 
   <!-- 
   body {    
      margin:0; 
      padding:0; 
      overflow: auto; 
      background: #edede9; 
   } 
   #idheader { 
      width:100%; 
      height:auto; 
      padding: 0; 
      margin: 0;     
} 
    #idheaderbg  {
    background: #E40A00; 
}
#idheadernowrap  {
    white-space:nowrap; 
}
    ul {list-style-type: lower-roman}
   -->
   </style>
   
<style TYPE="text/css" MEDIA="print">
<!--
/* Hide navigation links and add space between header
     and text in the printed version. Not valid for eBooks. */
#idnav { display:none;	 }
.topichead { padding: 5px 5px 20px 5px; }
-->
</style>   
   <script type="text/javascript" src="jquery.js"></script>
   <script type="text/javascript" src="helpman_settings.js"></script>
   <script type="text/javascript" src="helpman_topicinit.js"></script>

   <script type="text/javascript">
     HMSyncTOC("index.html", "drvsim_motioncueing_6_-_filter_cut-off_frequency.htm");
   </script>
   <script type="text/javascript" src="highlight.js"></script>
   <script type="text/javascript">
     $(document).ready(function(){highlight();});
   </script>
</head>
<body>

<!--ZOOMSTOP-->

<div id="idheader" >
<div id="idheaderbg">
<table width="100%" border="0" cellspacing="0" cellpadding="0" 
       style="margin: 0px; color: #D7D7D7;">

  <tr valign="middle">
    <td align="left" valign="middle" class="topichead">
    <!--<div id="idheadernowrap">-->
    <p class="crumbs" id="idnav"><b>Navigation:</b>&nbsp;
   
   VI-MotionCueing &gt; <a href="drvsim_motioncueing_vi-drivesim_gui_description.htm">VI-MotionCueing GUI description</a>&nbsp;&gt;</p>
      <h1 class="p_Heading1" style="page-break-after: avoid;"><span class="f_Heading1">6 - Filter cut-off Frequency</span></h1>

    <!--</div>-->
    </td>
    <td align="right" width="180" valign="middle" class="topichead" id="idnav">
    <div id="idheadernowrap">
    <a href="javascript: print();"
    		onmouseover="document.images.prntr.src='print_a.png'" 
        onmouseout="document.images.prntr.src='print_n.png'"
        ><img name="prntr" border="0" alt="Print this Topic" title="Print this Topic" src="print_n.png"
        ></a>&nbsp;&nbsp;
     <a href="drvsim_motioncueing_5_-_output_gains_sliders.htm"
        onmouseover="document.images.prev.src='back_a.png'" 
        onmouseout="document.images.prev.src='back_n.png'"
        ><img name=prev src="back_n.png" border=0 alt="Previous page"
        ></a><a href="drvsim_motioncueing_vi-drivesim_gui_description.htm"
        onmouseover="document.images.main.src='top_a.png'" 
        onmouseout="document.images.main.src='top_n.png'"><img name=main src="top_n.png" border=0 alt="Return to chapter overview"
        ></a><a href="drvsim_motioncueing_7_-_input_gains.htm"
        onmouseover="document.images.next.src='next_a.png'" 
        onmouseout="document.images.next.src='next_n.png'"><img name=next src="next_n.png" border=0 alt="Next page"
        ></a>
    </div>
    </td>
  </tr>
</table>
</div>

<!-- The following code displays Expand All/Collapse All links  below the header in topics containing toggles -->
  

</div>  



<div id="idcontent"><div id="innerdiv"> 
<!--ZOOMRESTART-->
<p class="p_Normal" style="margin: 0px 0px 0px 23px;">These are the cut-off frequency of the high pass and low pass filters applied to the input signals.</p>
<p class="p_Normal" style="margin: 0px 0px 0px 23px;">The high pass filters has to be thought as an useful way to simplify the tuning procedure and reduce the working space maintaining frequency consistency. They are not wash out filters. The filter are:</p>
<p class="p_Normal" style="margin: 0px 0px 0px 23px;">&nbsp;</p>
<p style="text-align: justify; text-indent: 0px; padding: 0px 0px 0px 13px; margin: 0px 0px 0px 23px;"><span style="font-size:10pt; font-family: 'Arial Unicode MS','Lucida Sans Unicode','Arial';color:#000000;display:inline-block;width:13px;margin-left:-13px">&#8226;</span>“Acc X HP”: i.e. the cut-off frequency for the longitudinal acceleration high pass filter.</p><p style="text-align: justify; text-indent: 0px; padding: 0px 0px 0px 13px; margin: 0px 0px 0px 23px;"><span style="font-size:10pt; font-family: 'Arial Unicode MS','Lucida Sans Unicode','Arial';color:#000000;display:inline-block;width:13px;margin-left:-13px">&#8226;</span>“Vel Pitch HP”: i.e. the cut-off frequency for the angular velocity of pitch high pass filter.</p><p style="text-align: justify; text-indent: 0px; padding: 0px 0px 0px 13px; margin: 0px 0px 0px 23px;"><span style="font-size:10pt; font-family: 'Arial Unicode MS','Lucida Sans Unicode','Arial';color:#000000;display:inline-block;width:13px;margin-left:-13px">&#8226;</span>“Acc Y HP”: i.e. the cut-off frequency for the lateral acceleration high pass filter.</p><p style="text-align: justify; text-indent: 0px; padding: 0px 0px 0px 13px; margin: 0px 0px 0px 23px;"><span style="font-size:10pt; font-family: 'Arial Unicode MS','Lucida Sans Unicode','Arial';color:#000000;display:inline-block;width:13px;margin-left:-13px">&#8226;</span>“Vel Roll HP”: i.e. the cut-off frequency for the angular velocity of roll high pass filter.</p><p style="text-align: justify; text-indent: 0px; padding: 0px 0px 0px 13px; margin: 0px 0px 0px 23px;"><span style="font-size:10pt; font-family: 'Arial Unicode MS','Lucida Sans Unicode','Arial';color:#000000;display:inline-block;width:13px;margin-left:-13px">&#8226;</span>Acc Z HP: i.e. the cut-off frequency for the vertical acceleration high pass filter.</p><p style="text-align: justify; text-indent: 0px; padding: 0px 0px 0px 13px; margin: 0px 0px 0px 23px;"><span style="font-size:10pt; font-family: 'Arial Unicode MS','Lucida Sans Unicode','Arial';color:#000000;display:inline-block;width:13px;margin-left:-13px">&#8226;</span>Acc Z HP HF: i.e. the cut-off frequency for the high frequency vertical acceleration high pass filter. Typically used for road disturbance reproduction while maintaining a limited usage of working area.</p><p style="text-align: justify; text-indent: 0px; padding: 0px 0px 0px 13px; margin: 0px 0px 0px 23px;"><span style="font-size:10pt; font-family: 'Arial Unicode MS','Lucida Sans Unicode','Arial';color:#000000;display:inline-block;width:13px;margin-left:-13px">&#8226;</span>Vel Yaw HP: &nbsp;i.e. the cut-off frequency for the angular velocity of yaw high pass filter.</p><p class="p_Normal" style="margin: 0px 0px 0px 23px;">&nbsp;</p>
<p class="p_Normal" style="margin: 0px 0px 0px 23px;">The suggested range of variation for all the subsystem are:</p>
<p class="p_Normal" style="margin: 0px 0px 0px 23px;">&nbsp;</p>
<div style="text-align: justify; text-indent: 0px; padding: 0px 0px 0px 0px; margin: 0px 0px 0px 23px;"><table style="border:none; border-spacing:0px; border-collapse:collapse;">
<thead>
<tr style="text-align:left;vertical-align:top;">
<th style="vertical-align:middle; width:433px; height:33px; background-color:#99ccff; padding:0px; border:solid thin #000000;"><p style="text-align: center; margin: 0px 0px 0px 23px;"><span style="font-size: 8pt; font-weight: bold;">Parameter name</span></p>
</th>
<th style="vertical-align:middle; width:700px; height:33px; background-color:#99ccff; padding:0px; border:solid thin #000000;"><p style="text-align: center; margin: 0px 0px 0px 23px;"><span style="font-size: 8pt; font-weight: bold;">Value</span></p>
</th>
</tr>
</thead>
<tbody>
<tr style="text-align:left;vertical-align:top;">
<td style="vertical-align:middle; width:433px; height:33px; background-color:#ffffff; padding:0px; border:solid thin #000000;"><p style="text-align: left; margin: 0px 0px 0px 23px;"><span style="font-weight: bold;">Acc X HP</span></p>
</td>
<td style="vertical-align:middle; width:700px; height:33px; background-color:#ffffff; padding:0px; border:solid thin #000000;"><p style="text-align: center; margin: 0px 0px 0px 23px;">0.5 / 1.5</p>
</td>
</tr>
<tr style="text-align:left;vertical-align:top;">
<td style="vertical-align:middle; width:433px; height:35px; background-color:#ffffff; padding:0px; border:solid thin #000000;"><p style="text-align: left; margin: 0px 0px 0px 23px;"><span style="font-weight: bold;">Acc Y HP</span></p>
</td>
<td style="vertical-align:middle; width:700px; height:35px; background-color:#ffffff; padding:0px; border:solid thin #000000;"><p style="text-align: center; margin: 0px 0px 0px 23px;">0.5 / 1.5</p>
</td>
</tr>
<tr style="text-align:left;vertical-align:top;">
<td style="vertical-align:middle; width:433px; height:35px; background-color:#ffffff; padding:0px; border:solid thin #000000;"><p style="text-align: left; margin: 0px 0px 0px 23px;"><span style="font-weight: bold;">Acc Z HP</span></p>
</td>
<td style="vertical-align:middle; width:700px; height:35px; background-color:#ffffff; padding:0px; border:solid thin #000000;"><p style="text-align: center; margin: 0px 0px 0px 23px;">0.5 / 1.5</p>
</td>
</tr>
<tr style="text-align:left;vertical-align:top;">
<td style="vertical-align:middle; width:433px; height:35px; background-color:#ffffff; padding:0px; border:solid thin #000000;"><p style="text-align: left; margin: 0px 0px 0px 23px;"><span style="font-weight: bold;">Acc X HP HF</span></p>
</td>
<td style="vertical-align:middle; width:700px; height:35px; background-color:#ffffff; padding:0px; border:solid thin #000000;"><p style="text-align: center; margin: 0px 0px 0px 23px;">4.0 / 15.0</p>
</td>
</tr>
<tr style="text-align:left;vertical-align:top;">
<td style="vertical-align:middle; width:433px; height:35px; background-color:#ffffff; padding:0px; border:solid thin #000000;"><p style="text-align: left; margin: 0px 0px 0px 23px;"><span style="font-weight: bold;">Vel Pitch HP</span></p>
</td>
<td style="vertical-align:middle; width:700px; height:35px; background-color:#ffffff; padding:0px; border:solid thin #000000;"><p style="text-align: center; margin: 0px 0px 0px 23px;">0.0 / 0.5</p>
</td>
</tr>
<tr style="text-align:left;vertical-align:top;">
<td style="vertical-align:middle; width:433px; height:35px; background-color:#ffffff; padding:0px; border:solid thin #000000;"><p style="text-align: left; margin: 0px 0px 0px 23px;"><span style="font-weight: bold;">Vel Roll HP</span></p>
</td>
<td style="vertical-align:middle; width:700px; height:35px; background-color:#ffffff; padding:0px; border:solid thin #000000;"><p style="text-align: center; margin: 0px 0px 0px 23px;">0.0 / 0.5</p>
</td>
</tr>
<tr style="text-align:left;vertical-align:top;">
<td style="vertical-align:middle; width:433px; height:35px; background-color:#ffffff; padding:0px; border:solid thin #000000;"><p style="text-align: left; margin: 0px 0px 0px 23px;"><span style="font-weight: bold;">Vel Yaw HP</span></p>
</td>
<td style="vertical-align:middle; width:700px; height:35px; background-color:#ffffff; padding:0px; border:solid thin #000000;"><p style="text-align: center; margin: 0px 0px 0px 23px;">0.0 / 1.0</p>
</td>
</tr>
</tbody>
</table>
</div>
<p class="p_Normal" style="margin: 0px 0px 0px 23px;">&nbsp;</p>
<p class="p_Normal" style="margin: 0px 0px 0px 23px;">The low pass filters are used to handle discontinuous or noisy input signals. The “tilt coordination Cut-off” is the cut-off of the tilt coordination LP filter.</p>
<p class="p_Normal" style="margin: 0px 0px 0px 23px;">&nbsp;</p>
<div style="text-align: justify; text-indent: 0px; padding: 0px 0px 0px 0px; margin: 0px 0px 0px 23px;"><table style="border:none; border-spacing:0px; border-collapse:collapse;">
<thead>
<tr style="text-align:left;vertical-align:top;">
<th style="vertical-align:middle; width:433px; height:33px; background-color:#99ccff; padding:0px; border:solid thin #000000;"><p style="text-align: center; margin: 0px 0px 0px 23px;"><span style="font-size: 8pt; font-weight: bold;">Parameter name</span></p>
</th>
<th style="vertical-align:middle; width:700px; height:33px; background-color:#99ccff; padding:0px; border:solid thin #000000;"><p style="text-align: center; margin: 0px 0px 0px 23px;"><span style="font-size: 8pt; font-weight: bold;">Value</span></p>
</th>
</tr>
</thead>
<tbody>
<tr style="text-align:left;vertical-align:top;">
<td style="vertical-align:middle; width:433px; height:33px; background-color:#ffffff; padding:0px; border:solid thin #000000;"><p style="text-align: left; margin: 0px 0px 0px 23px;"><span style="font-weight: bold;">Acc X LP</span></p>
</td>
<td style="vertical-align:middle; width:700px; height:33px; background-color:#ffffff; padding:0px; border:solid thin #000000;"><p style="text-align: center; margin: 0px 0px 0px 23px;">30 / 45-95</p>
</td>
</tr>
<tr style="text-align:left;vertical-align:top;">
<td style="vertical-align:middle; width:433px; height:35px; background-color:#ffffff; padding:0px; border:solid thin #000000;"><p style="text-align: left; margin: 0px 0px 0px 23px;"><span style="font-weight: bold;">Acc Y LP</span></p>
</td>
<td style="vertical-align:middle; width:700px; height:35px; background-color:#ffffff; padding:0px; border:solid thin #000000;"><p style="text-align: center; margin: 0px 0px 0px 23px;">30 / 45-95</p>
</td>
</tr>
<tr style="text-align:left;vertical-align:top;">
<td style="vertical-align:middle; width:433px; height:35px; background-color:#ffffff; padding:0px; border:solid thin #000000;"><p style="text-align: left; margin: 0px 0px 0px 23px;"><span style="font-weight: bold;">Acc Z LP</span></p>
</td>
<td style="vertical-align:middle; width:700px; height:35px; background-color:#ffffff; padding:0px; border:solid thin #000000;"><p style="text-align: center; margin: 0px 0px 0px 23px;">30 / 45-95</p>
</td>
</tr>
<tr style="text-align:left;vertical-align:top;">
<td style="vertical-align:middle; width:433px; height:35px; background-color:#ffffff; padding:0px; border:solid thin #000000;"><p style="text-align: left; margin: 0px 0px 0px 23px;"><span style="font-weight: bold;">Vel Pitch LP</span></p>
</td>
<td style="vertical-align:middle; width:700px; height:35px; background-color:#ffffff; padding:0px; border:solid thin #000000;"><p style="text-align: center; margin: 0px 0px 0px 23px;">5 / 45-95</p>
</td>
</tr>
<tr style="text-align:left;vertical-align:top;">
<td style="vertical-align:middle; width:433px; height:35px; background-color:#ffffff; padding:0px; border:solid thin #000000;"><p style="text-align: left; margin: 0px 0px 0px 23px;"><span style="font-weight: bold;">Vel Roll LP</span></p>
</td>
<td style="vertical-align:middle; width:700px; height:35px; background-color:#ffffff; padding:0px; border:solid thin #000000;"><p style="text-align: center; margin: 0px 0px 0px 23px;">5 / 45-95</p>
</td>
</tr>
<tr style="text-align:left;vertical-align:top;">
<td style="vertical-align:middle; width:433px; height:35px; background-color:#ffffff; padding:0px; border:solid thin #000000;"><p style="text-align: left; margin: 0px 0px 0px 23px;"><span style="font-weight: bold;">Vel Yaw LP</span></p>
</td>
<td style="vertical-align:middle; width:700px; height:35px; background-color:#ffffff; padding:0px; border:solid thin #000000;"><p style="text-align: center; margin: 0px 0px 0px 23px;">5 / 45-95</p>
</td>
</tr>
<tr style="text-align:left;vertical-align:top;">
<td style="vertical-align:middle; width:433px; height:35px; background-color:#ffffff; padding:0px; border:solid thin #000000;"><p style="text-align: left; margin: 0px 0px 0px 23px;"><span style="font-weight: bold;">Tilt LP</span></p>
</td>
<td style="vertical-align:middle; width:700px; height:35px; background-color:#ffffff; padding:0px; border:solid thin #000000;"><p class="p_Normal" style="text-align: center; margin: 0px 0px 0px 23px;">&lt; 0.5 (a value of 0 means no tilt coordination)</p>
</td>
</tr>
</tbody>
</table>
</div>
<p class="p_Normal" style="margin: 0px 0px 0px 23px;">&nbsp;</p>
<p class="p_Normal" style="margin: 0px 0px 0px 23px;">The maximum cut off values for low pass filters are 45Hz if the sampling rate of the cueing executable is 100Hz; 95Hz if the sampling rate is 200 Hz (recommended). It is also suggested to use this values if the platform performance allows to handle high frequencies, and anyhow never to exceed the dynamic limit of the platform response.</p>

<!--ZOOMSTOP-->
</div></div>
<script type="text/javascript"> 
<!-- 
var lastSlashPos = document.URL.lastIndexOf("/") >
document.URL.lastIndexOf("\\") ? document.URL.lastIndexOf("/") :
document.URL.lastIndexOf("\\");
if( document.URL.substring( lastSlashPos + 1, lastSlashPos + 4
).toLowerCase() != "~hh" )
{
    nsrInit();
}
--> 
</script> 
</body>
</html>
